FAR 23 LOADS
New Releases
New Features:
- Engine Mount Loads, Side Load Output: corrected FAR section reference to 23.363 (was 23.361).
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Engine Mount Loads: fixed bug that prevented a rotor from being properly deleted.
- Fixed missing program version in files created using the Legacy File Converter.
- Engine Mount Loads: turboprop rotor input now allows a diameter of 0.
- Engine Mount Loads, output: rotor inertias are now printed to four decimal places.
- Engine Mount Loads, output: Fixed spelling of maneuver for critical case 2..
- Engine Mount Loads, output: Changed ‘vertical tail load factor’ to ‘vertical load factor’ on critical case 4..
- Engine Mount Loads, GUI, Engine Tab: fixed bug that caused crash when deleting a rotor with blank input.
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Wing Inertia, output: removed eroneous output of “Aircraft Ixx” from previous build.
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Tail Load Dist: Horiz Tail Loads on Avg Chord: If the Select Critical Tail Loads does not have flapped conditions, the AoA and Camber loads for the flapped cases will now correctly be 0 lbs.
- Wing Inertia: Fixed crash when using custom aircraft inertia on first run.
- Wing Inertia: Wing root/tip density ratio input is now always required, regardless of choice for “Use default Ixx”
- Wing Inertia: former “Wing Inertia” groupbox on the “Wing Weight Configs” tab has been broken up into “Wing Weight Distribution” and “Aircraft Rolling Inertia”
- Wing Inertia, Output: the Ixx value used in the calculations, whether user-input or calculated default value, is now referred to as “Aircraft Ixx” instead of “Wing Ixx”.
- Splash Screen: updated copyright to 2025
- Wing Inertia: Renaming Wing Configs no longer removes them from load cases that had previously used them.
- Wing Intertia, GUI, Wing Weight Configs Tab, Aircraft Rolling Inertia box: Changed wording of default Ixx question to say “Wing Ixx” instead of “Aircraft Ixx”
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Select Critical Horizontal Tail Loads, output: Case 13 (Unsymmetrical Load) now correctly ignores flaps-extended cases when the output data does not have any flaps-extended data.
- Select Critical Wing Loads, output: Input data section no longer lists altitudes that aren’t used in the V-N data from Flight Loads.
- Select Critical Horizontal Tail Loads, output: Case 13 (Unsymmetrical Load) now correctly preserves the sign of the load from the baseline case.
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Air Loads, ouput BLD section: Angle to zero lift line of wing is now calculated correctly when only two BLD points are input.
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Aero Coeffs, Airplane Less Tail tab: Angle of fuse centerline to WL input is now persistent if the value is 0.
- Aero Coeffs, ouput BLD section: Angle to zero lift line of wing is now calculated correctly when only two BLD points are input.
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Program now uses unique file extensions for project save file, Flight Loads V-n data for the Select Module, Air Loads data, and Wing Inertia data.
- Output: Text size is resizable by holding Ctrl and rolling the mouse wheel.
- Output: Now features button to copy all output text to Windows clipboard.
- Updated GUI windows to have an ‘*’ to indicate unsaved changes in the file.
- Weight and CG: Simplified GUI and improved classification of weight items into Empty, Minimum, and Discretionary categories.
- Weight and CG: Added ability to import items from spreadsheet.
- Geometry is now hard coded to use 1000 spanwise elements. Previously was limited to 100.
- Geometry inputs cab be entered where more than one row can be seen at a time, and is possible to import from a spreadsheet. The spreadsheet option is especially useful for converting v6.1 geometry to v7.
- Added commuter category to all modules, including structural speeds, and flight loads.
- Aero Coefficients geometry is now linked to the Geometry Module.
- Aero Coefficients: Added 4th configuration to Cruise, Approach, Landing, and Takeoff.
- Aero Coefficients: Added input for arbitrary drag items such as belly pods or fairings.
- Aero Coefficients: Added option to rename any configuration, e.g. change Approach to Enroute or Cruise to Loiter.
- Flight Loads: Changed enroute configuration with cruise gusts to approach with flap gust limits and 2G maneuver limits.
- Flight Loads: Added option to specify whether any configuration has flaps or has speed limits. In this way it is still possible to specify an en-route condition with cruise maneuver load factors and gusts.
- Flight Loads: Output can now be enabled/disabled for individual configurations.
- Flight Loads increased the number of CG’s from 4 to unlimited.
- In Flight Loads it is now possible to override the FAA minimum required positive and negative load factors.
- Flight loads now allows user to input lift curve slope of horizontal tail instead of default 2*pi/(1+2/ARHT).
- Ability in Flight Loads to select which altitudes are required for each configuration. For example, the user may wish for approach configuration to only be used up to 20,000 feet even though the aircraft flies to 35,000 feet.
- Flight loads now automatically sends data to Select module without the need to import the select data, although this can still be done.
- Flight loads can still output the v6 legacy Select data for use in Excel and other 3rd party software, although v7 does not need the legacy Select data.
- Flight Loads now updates the max flap gust load factor found in the flight loads data to the Flap Loads module (requires at least one configuration with flaps in Flight Loads)
- Select module can now run with only the select file because the select file contains all data necessary. E.g. a new project can be made and run with the Select module only without the need to run Flight Loads if the user has a previously saved Select file.
- Added Commuter Rough Air Gusts (CRAG) to Select critical wing loads for Commuter Category airplanes.
- Critical Vertical tail now calculates commuter category and checks side gusts for Vc, Vb, Vd, Vf and Vpf with flaps. Vc gusts are combined with Vpf no flaps.
- Add rudder load calculations for Select Critical Vtail, for 3rd, 4th and Commuter cases.
- Removed engine position on the select critical fuselage loads. This input was not used in v6.1.
- Updated functionality of Wing Air Loads to store unlimited air loads conditions. Automatically imports critical wing conditions, and adds capability to add additional conditions. Previous version allowed only 3 configurations to be saved.
- Wing Air Loads now has the capability to import Aero Coefficient data from Aero Coefficients module.
- Wing Inertia Loads can have multiple wing weight configurations, such as full fuel, partial fuel, gear up or down, etc.
- Wing Inertia Loads can now enter an actual Ixx instead of only a default value.
- Wing Inertia: Case information can now be autopopulated using V-n data
- Net Loads: An unlimited number of combinations may now be saved and calculated.
- Improvement of Wing Net Loads. Added ability to apply factors to either air loads or inertia loads.
- Engine mount gyroscopic loads. With “Commuter” category, user may add gust load factor input, which is autofilled from the critical fuselage loads, but also allows user to enter a value. Output should reference 23.371(a)(c)
- Engine mount gyroscopic loads. If acrobatic allow entry of max yaw and pitch velocities (currently 2.5 and 1.0 rad/sec) and Nz expected during combined max yaw and pitch velocities. Output should reference 23.371(a)(b)
- Add input of actual thrust (lbs) for engine mount gyroscopic loads for all categories (normal, util, etc)
- Flap loads gets data from Structural Speeds & Flight Loads
- Tab loads gets data from Structural Speeds & Flight Loads
- Added the ability for both Tail Load Distribution modules that deal with the Horizontal Tail to output data for both the fully- and partially-loaded sides of the Htail for Case 13: Unsymmetrical Load
- One engine out allows input of actual thrust and drag.
- Landing Loads. Updated gamma angle calculation to use actual K, which changed a’, b’, d’ and 3-wheel landing cases.
- Landing Loads. Left Gear Loads are now in a right hand coordinate system (was left hand).
FAR 23 LOADS is protected by Wibu Systems WibuKey and CodeMeter copy protection so that only registered users of FAR 23 LOADS Version 7 can install the software and read the user manual. Please contact DARcorporation for upgrade pricing if you have an older version of FAR 23 LOADS.
New Features:
- Updated iteration on dynamic pressure to achieve CL to limit STALL +N, STALL -N, STALL +1G, STALL -1G load cases to VA which affect ACRL.
- Updated envelope of loads module to accept up to 200 entries (was 105) to be consistent with weight and c.g. module.
New Features:
- Updated Horizontal Tail, Select Module for Unsymmetrical Tail Load. Output updated for cases that are critical for Gust -D. Previous GUST -D output listed ref condition as ‘BAL A’, which should be ‘GUST -D’. Numerical output not affected. Critical tail loads selected for Gust -C or other conditions not affected.
New Features:
- Updated all Airloads modules with proper spelling of ‘Ref Peery’.
- Updated last critical fuselage loads case to list ‘TOTAL TAIL LOAD’. It was formerly listed as ‘BALANCING TAIL LOAD’.
- Updated Horizontal Tail, Select Module for Down Gust Tail Load Flaps Retracted. Output updated for cases that are critical for Gust -D. Previous GUST -D output listed ref condition as ‘BAL A’, which should be ‘GUST -D’. Numerical output not affected. Critical tail loads selected for Gust -C not affected.
New Features:
- Updated bugs associated with horizontal and vertical tail geometries and running Aero Coefficients.
- Updated BACKUP_000.far file to be saved in ‘data’ program directory. Was being saved in working directory.
- Updated Flight loads module. Gust load factors to include the lift curve slope of the horizontal tail.
- Critical Vertical Tail Loads. Updated printed output. Side Gust Load at VC, should be to FAR 23.443(a)(c).
- Updated Landing Loads output for ground roll-main wheels braked, nose gear down. Updated VMP=1.33W-2VMP (was 1.33-2VMP).
New Features:
- Updated Horizontal Tail Select to match Flight Loads calculations. Downwash ∂ε ⁄∂α is based on Glauert modified wing lift curve slope.
New Features:
- Updated Flight Loads Module output to include pitch due to drag.
- Update Engine Mount Loads and Reciprocal calculations.
- Added wing sweep to Flight Loads Module.
- Corrected spelling in Aero Coefficients Module.
- Fixed save issue in Critical Vertical Tail Loads Module.
- Added inch unit designation to span of vertical tail in Vertical Tail Load Distribution Module input.
Corrected CL input and autoupdate procedure in Aero Coefficients and Airloads Modules.
- Updated Flight Loads Module Gust outputs.
